Date:	13 Nov 2012 07:03:27 -0500
From:	"George Spelvin" <linux@...izon.com>
To:	linux-ext4@...r.kernel.org
Cc:	linux@...izon.com
Subject: e2fsck: eh_magic = 0000 != f30a

Having just created and filled a 64bit file system, I ran e2fsck on it,
and keep getting this message printed shortly after "Pass 1" is printed.

It doesn't seem to cause any obvious bad things.  Is it dangerous?

Adding some debugging prints to e2fsck, I discovered the error occurs
with inode 7 (the reside inode) at line 869 of e2fsck/pass1.c.


Also, the first fsck ever on the newly filled filesystem (which was run
with -D) produced a 1-block error:

Pass 5: Checking group summary information                                     
Block bitmap differences:  -1719140557                                         
Fix<y>? yes
Free blocks count wrong for group #52464 (32344, counted=32345).               
Fix<y>? yes
Free blocks count wrong (227072527, counted=227072528).
Fix<y>? yes

The second (without -D) reversed it:
# e2fsck -f -v -C0 /dev/md1
e2fsck 1.43-WIP (22-Sep-2012)
Pass 1: Checking inodes, blocks, and sizes
eh_magic = 0000 != f30a
Pass 2: Checking directory structure                                           
Pass 3: Checking directory connectivity                                        
Pass 4: Checking reference counts                                              
Pass 5: Checking group summary information                                     
Block bitmap differences:  +1719140557                                         
Fix<y>? yes
Free blocks count wrong for group #52464 (32345, counted=32344).               
Fix<y>? yes
Free blocks count wrong (227072528, counted=227072527).
Fix<y>? yes


Dumping some information:
debugfs:  ex <7>
<7>: does not uses extent block maps
debugfs:  stat <7>
Inode: 7   Type: regular    Mode:  0600   Flags: 0x0
Generation: 0    Version: 0x00000000:00000000
User:     0   Group:     0   Size: 4299210752
File ACL: 0    Directory ACL: 0
Links: 1   Blockcount: 188424
Fragment:  Address: 0    Number: 0    Size: 0
 ctime: 0x50a021ee:00000000 -- Sun Nov 11 17:08:46 2012
 atime: 0x50a021ee:00000000 -- Sun Nov 11 17:08:46 2012
 mtime: 0x50a021ee:00000000 -- Sun Nov 11 17:08:46 2012
crtime: 0x50a021ee:00000000 -- Sun Nov 11 17:08:46 2012
Size of extra inode fields: 28
Inode checksum: 0xb1958b41
BLOCKS:
(DIND):2122, (IND):1025, (1036):33793, (1037):99329, (1038):164865, (1039):230401, (1040):295937, (1041):820225, (1042):885761, (1043):1606657, (1044):2655233, (1045):4097025, (1046):7963649, (1047):11240449, (1048):20481025, (1049):23888897, (1050):71664641, (1051):78676993, (1052):102401025, (1053):214991873, (1054):512001025, (1055):550732801, (1056):644973569, (1057):1934918657, (IND):1026, (2060):33794, (2061):99330, (2062):164866, (2063):230402, (2064):295938, (2065):820226, (2066):885762, (2067):1606658, (2068):2655234, (2069):4097026, (2070):7963650, (2071):11240450, (2072):20481026, (2073):23888898, (2074):71664642, (2075):78676994, (2076):102401026, (2077):214991874, (2078):512001026, (2079):550732802, (2080):644973570, (2081):1934918658, (IND):1027, (3084):33795, (3085):99331, (3086):164867, (3087):230403, (3088):295939, (3089):820227, (3090):885763, (3091):1606659, (3092):2655235, (3093):4097027, (3094):7963651, (3095):11240451, (3096):20481027, (3097):23888899, (3098):71664643, (3099):78676995, (3100):102401027, (3101):214991875, (3102):512001027, (3103):550732803, (3104):644973571, (3105):1934918659, (IND):1028, (4108):33796, (4109):99332, (4110):164868, (4111):230404, (4112):295940, (4113):820228, (4114):885764, (4115):1606660, (4116):2655236, (4117):4097028, (4118):7963652, (4119):11240452, (4120):20481028, (4121):23888900, (4122):71664644, (4123):78676996, (4124):102401028, (4125):214991876, (4126):512001028, (4127):550732804, (4128):644973572, (4129):1934918660, (IND):1029, (5132):33797, (5133):99333, (5134):164869, (5135):230405, (5136):295941, (5137):820229, (5138):885765, (5139):1606661, (5140):2655237, (5141):4097029, (5142):7963653, (5143):11240453, (5144):20481029, (5145):23888901, (5146):71664645, (5147):78676997, (5148):102401029, (5149):214991877, (5150):512001029, (5151):550732805, (5152):644973573, (5153):1934918661, (IND):1030, (6156):33798, (6157):99334, (6158):164870, (6159):230406, (6160):295942, (6161):820230, (6162):885766, (6163):1606662, (6164):2655238, (6165):4097030, (6166):7963654, (6167):11240454, (6168):20481030, (6169):23888902, (6170):71664646, (6171):78676998, (6172):102401030, (6173):214991878, (6174):512001030, (6175):550732806, (6176):644973574, (6177):1934918662, (IND):1031, (7180):33799, (7181):99335, (7182):164871, (7183):230407, (7184):295943, (7185):820231, (7186):885767, (7187):1606663, (7188):2655239, (7189):4097031, (7190):7963655, (7191):11240455, (7192):20481031, (7193):23888903, (7194):71664647, (7195):78676999, (7196):102401031, (7197):214991879, (7198):512001031, (7199):550732807, (7200):644973575, (7201):1934918663, (IND):1032, (8204):33800, (8205):99336, (8206):164872, (8207):230408, (8208):295944, (8209):820232, (8210):885768, (8211):1606664, (8212):2655240, (8213):4097032, (8214):7963656, (8215):11240456, (8216):20481032, (8217):23888904, (8218):71664648, (8219):78677000, (8220):102401032, (8221):214991880, (8222):512001032, (8223):550732808, (8224):644973576, (8225):1934918664, (IND):1033, (9228):33801, (9229):99337, (9230):164873, (9231):230409, (9232):295945, (9233):820233, (9234):885769, (9235):1606665, (9236):2655241, (9237):4097033, (9238):7963657, (9239):11240457, (9240):20481033, (9241):23888905, (9242):71664649, (9243):78677001, (9244):102401033, (9245):214991881, (9246):512001033, (9247):550732809, (9248):644973577, (9249):1934918665, (IND):1034, (10252):33802, (10253):99338, (10254):164874, (10255):230410, (10256):295946, (10257):820234, (10258):885770, (10259):1606666, (10260):2655242, (10261):4097034, (10262):7963658, (10263):11240458, (10264):20481034, (10265):23888906, (10266):71664650, (10267):78677002, (10268):102401034, (10269):214991882, (10270):512001034, (10271):550732810, (10272):644973578, (10273):1934918666, (IND):1035, (11276):33803, (11277):99339, (11278):164875, (11279):230411, (11280):295947, (11281):820235, (11282):885771, (11283):1606667, (11284):2655243, (11285):4097035, (11286):7963659, (11287):11240459, (11288):20481035, (11289):23888907, (11290):71664651, (11291):78677003, (11292):102401035, (11293):214991883, (11294):512001035, (11295):550732811, (11296):644973579, (11297):1934918667, (IND):1036, (12300):33804, (12301):99340, (12302):164876, (12303):230412, (12304):295948, (12305):820236, (12306):885772, (12307):1606668, (12308):2655244, (12309):4097036, (12310):7963660, (12311):11240460, (12312):20481036, (12313):23888908, (12314):71664652, (12315):78677004, (12316):102401036, (12317):214991884, (12318):512001036, (12319):550732812, (12320):644973580, (12321):1934918668, (IND):1037, (13324):33805, (13325):99341, (13326):164877, (13327):230413, (13328):295949, (13329):820237, (13330):885773, (13331):1606669, (13332):2655245, (13333):4097037, (13334):7963661, (13335):11240461, (13336):20481037, (13337):23888909,
[snip]
 (IND):1023, (1047564):33791, (1047565):99327, (1047566):164863, (1047567):230399, (1047568):295935, (1047569):820223, (1047570):885759, (1047571):1606655, (1047572):2655231, (1047573):4097023, (1047574):7963647, (1047575):11240447, (1047576):20481023, (1047577):23888895, (1047578):71664639, (1047579):78676991, (1047580):102401023, (1047581):214991871, (1047582):512001023, (1047583):550732799, (1047584):644973567, (1047585):1934918655, (IND):1024, (1048588):33792, (1048589):99328, (1048590):164864, (1048591):230400, (1048592):295936, (1048593):820224, (1048594):885760, (1048595):1606656, (1048596):2655232, (1048597):4097024, (1048598):7963648, (1048599):11240448, (1048600):20481024, (1048601):23888896, (1048602):71664640, (1048603):78676992, (1048604):102401024, (1048605):214991872, (1048606):512001024, (1048607):550732800, (1048608):644973568, (1048609):1934918656
TOTAL: 23553

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